1 /*****************************************************************************/
5 /* Symbol table for the ca65 macroassembler */
9 /* (C) 1998-2011, Ullrich von Bassewitz */
10 /* Roemerstrasse 52 */
11 /* D-70794 Filderstadt */
12 /* EMail: uz@cc65.org */
15 /* This software is provided 'as-is', without any expressed or implied */
16 /* warranty. In no event will the authors be held liable for any damages */
17 /* arising from the use of this software. */
19 /* Permission is granted to anyone to use this software for any purpose, */
20 /* including commercial applications, and to alter it and redistribute it */
21 /* freely, subject to the following restrictions: */
23 /* 1. The origin of this software must not be misrepresented; you must not */
24 /* claim that you wrote the original software. If you use this software */
25 /* in a product, an acknowledgment in the product documentation would be */
26 /* appreciated but is not required. */
27 /* 2. Altered source versions must be plainly marked as such, and must not */
28 /* be misrepresented as being the original software. */
29 /* 3. This notice may not be removed or altered from any source */
32 /*****************************************************************************/
52 /*****************************************************************************/
54 /*****************************************************************************/
58 /* Symbol table flags */
59 #define ST_NONE 0x00 /* No flags */
60 #define ST_DEFINED 0x01 /* Scope has been defined */
63 typedef struct SymTable SymTable;
65 SymTable* Next; /* Pointer to next table in list */
66 SymTable* Left; /* Pointer to smaller entry */
67 SymTable* Right; /* Pointer to greater entry */
68 SymTable* Parent; /* Link to enclosing scope if any */
69 SymTable* Childs; /* Pointer to child scopes */
70 SymEntry* Label; /* Scope label */
71 Collection Spans; /* Spans for this scope */
72 unsigned Id; /* Scope id */
73 unsigned short Flags; /* Symbol table flags */
74 unsigned char AddrSize; /* Address size */
75 unsigned char Type; /* Type of the scope */
76 unsigned Level; /* Lexical level */
77 unsigned TableSlots; /* Number of hash table slots */
78 unsigned TableEntries; /* Number of entries in the table */
79 unsigned Name; /* Name of the scope */
80 SymEntry* Table[1]; /* Dynamic allocation */
84 extern SymTable* CurrentScope; /* Pointer to current symbol table */
85 extern SymTable* RootScope; /* Root symbol table */
89 /*****************************************************************************/
91 /*****************************************************************************/
95 void SymEnterLevel (const StrBuf* ScopeName, unsigned char Type,
96 unsigned char AddrSize, SymEntry* OwnerSym);
97 /* Enter a new lexical level */
99 void SymLeaveLevel (void);
100 /* Leave the current lexical level */
102 SymTable* SymFindScope (SymTable* Parent, const StrBuf* Name, int AllocNew);
103 /* Find a scope in the given enclosing scope */
105 SymTable* SymFindAnyScope (SymTable* Parent, const StrBuf* Name);
106 /* Find a scope in the given or any of its parent scopes. The function will
107 * never create a new symbol, since this can only be done in one specific
111 SymEntry* SymFindLocal (SymEntry* Parent, const StrBuf* StrBuf, int AllocNew);
112 /* Find a cheap local symbol. If AllocNew is given and the entry is not
113 * found, create a new one. Return the entry found, or the new entry created,
114 * or - in case AllocNew is zero - return 0.
117 SymEntry* SymFind (SymTable* Scope, const StrBuf* Name, int AllocNew);
118 /* Find a new symbol table entry in the given table. If AllocNew is given and
119 * the entry is not found, create a new one. Return the entry found, or the
120 * new entry created, or - in case AllocNew is zero - return 0.
123 SymEntry* SymFindAny (SymTable* Scope, const StrBuf* Name);
124 /* Find a symbol in the given or any of its parent scopes. The function will
125 * never create a new symbol, since this can only be done in one specific
129 #if defined(HAVE_INLINE)
130 INLINE unsigned char GetSymTabType (const SymTable* S)
131 /* Return the type of the given symbol table */
136 # define GetSymTabType(S) ((S)->Type)
139 void SymCheck (void);
140 /* Run through all symbols and check for anomalies and errors */
142 void SymDump (FILE* F);
143 /* Dump the symbol table */
145 void WriteImports (void);
146 /* Write the imports list to the object file */
148 void WriteExports (void);
149 /* Write the exports list to the object file */
151 void WriteDbgSyms (void);
152 /* Write a list of all symbols to the object file */
154 void WriteScopes (void);
155 /* Write the scope table to the object file */
159 /* End of symtab.h */